Combustion-accelerator.



BEST AVAILABLE COP E. A. HELLER.

COMBUSTIGN ACCELERATOR.

Arrucmo'u run) was 21. 191's.

1,211,149. Patented Jan.2, 1917.

WITNESSES INVENTOR W ATTORNEYS BEST AVAlLABLE C(DP.

EMIL ARTHUR HELLER, OF NEVT YORK, N. Y.

COMBUSTION -ACGELERATOR.

Specification of Letters Patent.

B 581 AYAF-ABLE Patented Jan. 2, 1917.

Application filed June 27, 1916. Serial No. 106,226.

T 0 all whom it may concern:

Be it known that I, EMIL A. HELLER, a citizen of the United States, anda resident of the city of New York, borough of Bronx, in the county ofBronx and State of New York, have invented a new and ImprovedGombustion-Accelerator, of which the following is a full, clear, andexact description.

My invention relates to means for a crating the combustion-of fuel infun) and hasipfcrencemore particularly to vice for facilitating theconsumpl' of smoke which would be otherwise unconsumed.

\Vith the above and other objects in View, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in all the views.

Figure 1 is a cross section of a boiler furnace provided with anembodiment of my invention, which is shown in section; Fig. 2 is anenlarged longitudinal section through the combustion accelerator; Fig. 3is a plan view thereof; and Fig. 4 is a section on line ll, Fig. 2.

Referring to the drawings, 5 is the mixing chamber of the accelerator,which is ireferably in the shape of a drum slotted through its entirelength and bordered at the slot by longitudinal flanges 6. This flangedslot constitutes the nozzle of the chamber through which the mixture ofair and fuel is discharged. The drum has also an air passage 7 on theside opposite the nozzle. The passage is preferably of circular crosssection and is located substantially midway between the closed ends ofthe drum. The length of the air passage depends on the size of thefurnace wall for which the device is to be used. The extremity 8 of theair passage which lies outside of the furnace is preferably flared, acover 9 being provided for the flared end so as to obstruct, whendesired, the flow of air therethrough to the drum.

To give the air passing through the passage 7 a circular movement, astationary helix 10 is provided within the air passage 7. The airpassage 7 near the mixing chamber, has

a. suction nozzle or fuel inlet 11, the mouth of which nozzle is shorterthan the length of the drum, and rapidly converges to the width of theair passage so as to concentrate the movement of the fuel drawn thereinby the circular and rapid movement of the air flowing through the airpassage into the drum. To obtain a perfect mixture of the air and fuelbefore t he same passes through he nozzle of the drum, baffle plates 12are provided within the drum. Both of the plates extend through theentire length of the drum, one depending in front of the air inlet andthe other rising in front of the nozzle. Due to the depending and risingbaflies the mixture of air and fuel is forced toZdescend and then ascendwithin the mixing chamber before it can pass through the nozzle into thefurnace.

The mixing chamber is of a width sulficient to extend substantially overthe entire width of the grate 13 of the furnace. The accelerator isplaced sufliciently above the grate notto interfere with the charging ofthe grate with fuel. It is also placed sufiiciently over the grate sothat the smoke generated by imperfect combustion will be within the areaof action of the suction nozzle 11 whereby the smoke is drawn in andmixed with the air passing into the mixing chamber. The mixing chamberbeing subjected to the heat of the flame generated on the grate preheatsthe mixture before it is ejected from the discharge nozzle 14: where itwill be instantly ignited by the heat within the furnace. In consequencethe originally unconsumed fuel will be consumed and the heat absorbed orutilized directly under the subject matter to be heated by the furnace.As a result there is a better combustion of the fuel and elimination ofsmoke or unconsumed fuel. To prevent the collapsing of the flanges 6 atthe discharge nozzle 14, spacers 15 are provided in the shape of ribs.

I claim:

1. A combustion accelerator for furnaces comprising a mixing chamberhaving a discharge nozzle adapted to be disposed within the fire chamberof the furnace, said mixing chamber having an air inlet adapted to bedisposed outside of the furnace, bafiie plates in said chamber betweenthe air inlet and the discharge nozzle, means associated with the airinlet to give a whirling motion to the air entering the chamber, and asuction nozzle @537 AVAlLABLE COP associated With the air inlet andadapted to be located Within the fire chamber of the furnace.

2. A combustion accelerator for furnaces comprising a mixing chamberadapted to be disposed Within the furnace and having a discharge nozzleWithin the fire chamber of the furnace, said mixing chamber havingan airinlet opposite the nozzle adapted to be disposed outside of the furnace,bafiie plates within the chamber for intercepting the direct flow fromthe inlet to the discharge nozzle, means Within the air inlet forWhirlingthe air entering the chamber, and a suc- Llan nozzle leading tothe air inlet and located between said means and chamber and adapted tobe disposed within the fire chamber of the furnace.

3. A combustion accelerator for furnace: comprising a drum adapted'to bedisposed Within the furnace, said drum having a slot extendingsubstantially through its entire length and'forming a discharge nozzletherethrough into the fire chamber of the furnace, a tubular memberextending from the drum substantially midway between its aids and.located opposite said slot, the end f said tubu lar memberbeing'adaptedto be optics of this iiatent may belobtained-for 4 tubularmember into the drum, and a suclocated outside of the furnace to form anair inlet for said drum, bafiie plates within 3 said drum extendinglongitudinally thereof and intercepting the direct flow from the inletto the slot, a helix Within the tubular memberto Whirl the air passingthrough the tion nozzle depending from the inlet between the helix andthe drum and adapted to be located Within the fire chamber of the furnace.

7 4. A: combustion accelerator for furnaces comprising a mixing chamberhaving a discharge nozzle adapted to be disposed Within the furnace soas to discharge in the direction of theoutlet of combustion gases fromthe; fire chamber of the furnace, said mix- 4 :iamber having an airinlet opposite ozzle adapted to be disposed outside of urnace,bafileplates Within the charm i tween the-air inlet and the nozzle, 331d a '91 nozzle associated with the air inletand, adapted to bedisposed Within the fire chambe of the furnace to draw the u' n burnedgases of the fire chamber and cause the 'gases to. pass with the'airthrough the discharge nozzle.

' I EMIL ARTHUR HELLER.

five cents eacli, by addressingthe Commissioner of Patents, .washingtomnc. p

